Alarm mounting and actuator



J. M. BUTCHER. ALARM MOUNTING AND ACTUATOR.

APPLICATION FILED FEB. 16, 1920.

1,356,259. Patented Oct. 19, 1920.1

UNITED STATES PATENT OFFICE."

JAMES M. BUTCHER, OF CHICAGO. ILLINOIS, ASSIGNOR TO SENTINEL ALARM CO., CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

ALARM MOUNTING AND ACTUATOR.

To all whom it may concern:

Be it known that 1, JAMES M. BUTCHER, a citizen of the United States, residing at Chicago, in the county of Cool: and State of Illinois, have invented certain new and useful Improvements in Alarm Mountings and Actuators, of which the following is a specification.

This invention relates to a mounting through means of which an alarm maybe supported upon one of two relatively movablemembers of a building structure, and through means of which the alarm will be actuated by movement automatically developed in the mounting as a result of rela tive movement between. such members of the building structure; and particularly to a mounting in which the alarm actuating movement takes place parallel to the face upon which the mounting is attached, and

v 1919, Serial No.l269,212, I have described and broadly claimed'an alarm mounting of this kind as well asthe combination therewith of an alarm device adapted to be set into operation by the movable member of the mounting, the illustrative embodiment disclosed in said application being 'partic ularly designed for application to the face of a door'near one edge.

The object of the presentinvention is to V 40 provide an improved actuator for alarms of the kind above described. One feature of the invention consists in providing an 'actuator in the form of a thrust bar and an attaching member with which the thrust bar is connected and upon which relative movement of the thrust bar is permitted by inherent flexibility of the connections; the attaching member being preferably adapted to receive and support the alarm which the actuator is to control. Another feature consists in having the attaching member and the actuating member struck from a single piece of metal in a manner to provide flexible connectors between the thrust fibar and the attaching member. Still an- Specification of Letters Patent.

Application filed February 16, 192p. Serial no.

Patented Oct. 19, 1920.

other feature consists in the particular .de-

sign of the combined attaching member and actuating member whereby an actuatorand attaching member having the features above recited may be cheaply and durably produced.

The invention isnot limited in its application for cooperation with a door and its jamb, but could obviously be used in connection with any two members ofa building structure, one of which moves to and fromthe other; hence, while the invention will be described in connection with a door and its associated jamb, these terms are to be understood 'as illustrative rather than terms of limitation in the useof the invention.

In the accompanayingdrawing Figure 1 is a face view of a door with its adjacent jamb and an alarm device associated with these members through means of an illustrative embodiment of the mounting constituting the subject-matter of the present invention. I N

Fig. 2 is a horizontal sectional View of parts shown in Fig. l with the alarm device in plan. i

Fig. 3 is a view of a sheet metal blank from which the preferred embodiment of the mounting is constructed; and

Fig. 4: is a detail view of the mounting in form for use. I

1A. represents a doorand B a door frame.

The mounting comprises an attaching member 1 adapted to be securedby screws 2 inserted' through perforations2 to the door A and'having a key-holeslot 3 adapted to receive a stud-4 of an alarm 5. Slot 3is contracted in two directions from its enlarged central opening which receives the stud 4: so that the mounting may be applied to either a right-hand or a left-hand door at will. In either position stud 4 introduced through the enlarged portion of the slot 3 will be held by the weight of the alarm 5 in the restricted or confining portion of the slot.

Carried by the attaching member 1 is a thrust bar 6 which lies over the face of the door to which the mounting is attached, and which has an end 7 adapted to cooperate with the door jamb b or other member of the building structure to and from which the alarm moves in the opening and closing of the door or other member upon which the alarm is mounted. In cooperating with the door jamb the end 7 will be deflected from the plane of the thrust bar 6. Thrust bar 6 carries a resser-foot 8 through means of which it controls the alarm 5, as, for instance, by bearing against the plunger 9' of the alarm.

For movably supporting the thrust bar 6 from the mounting 1, it is connected to the latter through means of one or more radius arms 10, preferably two in number, extending parallel and offsetting the thrust bar from the connected portion of the attaching member a distance that affords some amplitude of thrust movement to the bar 6- without objectionable lateral moment. The radius arms 10 preferably afford movement to the bar 6 through the inherent flexibility of the arms, andthey are rendered resilient so that they return the bar 6 to normal position when uninfluenced by contact with the door jamb or other member with which the bar coacts.

For cheaply producing the combined attaching member and actuating member of the kind above described, said members are preferably produced integrally from a single blank stamped from sheet metal as suggested in Fig. 3, such blank being finished by bending the radius arms 10 where they join the attaching member and thrust bar so as to present said arms in a plane perpendicular to the original plane of the blank, and present the lesser dimension of each arm in the direction of movement of said bar 6. Since the presser-foot 8 is carried on one of the arms 10, this deflection of said arm also presents the presser-foot in position to coact with the plunger 9 of the alarm. This manipulation together With deflection of the end 7 appropriately to the situation in which the mounting is to be used, completes the device.

I claim:

1. In an alarm device, an actuating member comprising a thrust bar, an attaching member, and radius arms supporting the thrust bar from the attaching member, and ofl -setting it therefrom to permit of its movement relatively thereto.-

2. In an actuator for alarms, a thrust bar, an attaching member, flexible connectors between said attaching member and said thrust bar, and a presser-foot moving with said thrust bar.

a thrust bar from the attaching member and oflf-setting it therefrom to permit of its movement relatively thereto; said attaching member being constructed to receive and support an alarm in position to be controlled by said thrust bar.

6. An actuator for alarms comprising a plate ofsheet metal fashioned to form an attaching member, a thrust bar, and a pair of parallel arms offsetting the thrust bar from one portion of the attaching member; said arms being deflected from the plane of the thrust bar to present their lesser dimension in the direction of movement of the thrust bar and thereby develop flexibility in said direction.

7. An actuator for alarms comprising a plate of sheet metal fashioned to form an attaching member, a thrust bar, and a pair of parallel arms offsetting the thrust bar from one portion of the attaching member; said arms being deflected from the plane of the thrust bar to present their lesser dimension in the direction of movement of the thrust bar and thereby develop flexibility in said direction; one of said radius arms having an extension providing a presser-foot which partakes of the movement of the radius arm and thrust bar.

Signed at Chicago, Illinois, this 12th day of February, 1920.

JAMES M. BUTCHER. 

